[cassianoleal]

I've beenthrough this song and dance. Did months-long PoCs (with live data, running next to the then-production Prometheus deployment) of Thanos, Cortex and Victoria Metrics.

VM won hands down on pretty much all counts. It's easy and simple to operate and monitor, it scales really well and you can plan around how you want to partition and scale each component, it's incredibly cheap to run as performace is superior to the others, even when backed by spinning HDDs vs the other solutions on SSDs.

It's especially easy to operate on Kubernetes using their CRDs and operators.

I am not associated with Victoria Metrics in any way, just a happy user and sysadmin who ran it for a few years.

[mikepurvis]

VictoriaMetrics was recommended to me by a contractor and I've been very happy with it as well. It does have an option to push in metrics, which I intend to use with transient environments like CI jobs and the like, though I haven't gotten there yet.

[cassianoleal]

Yep, we used to use that in a few places. CI jobs, batch processes, etc. Prometheus has PushGateway which we also used before migrating to VM, but it had certain drawbacks (can't recall exactly what, sorry) that the new solution didn't.